release: v4.6.151 — wget that actually saves, web_fetch that actually pagesHEADv4.6.151main

S1 (reported by agent-os4-maint-01, wrongly refuted by the chat auto-reply):
wget existed but was unusable and dishonest.
- Cause 1: _cmdWget used the page's own fetch(url), so every cross-origin URL
  died on CORS ("Failed to fetch"). Measured in the served v4.6.150 page:
  fetch(cgit README) threw, /api/fetch returned 200/1954 bytes.
- Cause 2: _vfsWriteBytes ignored writeFile()'s boolean, so the command printed
  a green tick when the target directory did not exist. Measured:
  fs.writeFile('nosuchdir/x.txt') === false.
- Cause 3: bytes were round-tripped through String.fromCharCode, mangling UTF-8.
- Fix: fetch through /api/fetch (raw source), mkdir -p, writeFile + read-back
  verification, error instead of a tick on failure. Register curl with
  -s/-o parsing delegating to the same writer so the two cannot drift.

S2 (same reporter): web_fetch could not page and said it could.
- Cause: the handler honoured max_chars up to 50 000, then _clipToolResult kept
  toolResultChars-200 = 11 800, so 38 200 chars vanished silently; offset was
  not in the schema and was never read, so next_offset pointed at a page the
  caller could not request again.
- Fix: offset/next_offset/total_chars/source_bytes in the contract; the page is
  built, measured against the clip budget and shrunk until the envelope fits,
  so next_offset - returned_chars is always 0.
- Also fixed: _clipToolResult appended "0 of N chars withheld" when the content
  already fitted, claiming a loss that did not happen.

C1: fetch <url> --save=FILE — the only terminal path from a remote URL to the
VFS, so a 90 KB source page no longer has to be read through 3 000-char
scrollback.

Proxy: /api/extract now returns source_bytes (raw page size) and
content_chars_utf16. Python len() counts code points while JS String.length
counts UTF-16 units; 7 astral characters in the changelog left a 7-char gap at
the end of a 90 KB page (measured). _html_ok declares charset=utf-8.

Verified: node --check on all four modules; py_compile; bundles rebuilt;
served bytes identical to disk for all five assets at ?v=v4.6.151; live in the
browser: curl -s -o review/main.md <cross-origin> saved 1954 chars with the
correct head, a 404 wrote no file, fetch --save wrote 91 518 chars,
web_fetch p1 returned 11 754 with next_offset 11 754 (gap 0), page 2 started at
a different offset with next 23 496.

6 files changed, 192 insertions, 41 deletions

diff --git a/main.html b/main.html
index 7c5eb85..d9fa261 100644
--- a/main.html
+++ b/main.html
@@ -1349,13 +1349,13 @@
     </script>
 
     <!-- v4.5.63: A2A scratchpad fixes + agent-register arg fix -->
-<script src="modules/core/core-bundle.js?v=v4.6.150"></script>
+<script src="modules/core/core-bundle.js?v=v4.6.151"></script>
 
     <!-- Async dependency-ordered module loader now only initializes terminal and loads optional ext modules -->
-<script src="modules/core/module-loader.js?v=v4.6.150"></script>
+<script src="modules/core/module-loader.js?v=v4.6.151"></script>
 
     <!-- Critical ext bundle loads AFTER webx11 exists so registerModule calls work -->
-<script src="modules/ext/critical-ext-bundle.js?v=v4.6.150"></script>
+<script src="modules/ext/critical-ext-bundle.js?v=v4.6.151"></script>
 
 <script>
 // ═══ ONE TRUE VERSION SOURCE ═══
diff --git a/modules/core/core-bundle.js b/modules/core/core-bundle.js
index c37d13d..4483709 100644
--- a/modules/core/core-bundle.js
+++ b/modules/core/core-bundle.js
@@ -9144,7 +9144,8 @@ buildSystemPrompt() {
                                 method: { type: 'string', enum: ['GET', 'POST'], description: 'HTTP method (default GET)' },
                                 body: { type: 'string', description: 'Request body for POST (JSON string, max 10KB)' },
                                 content_type: { type: 'string', description: 'Content-Type header (default application/json for POST)' },
-max_chars: { type: 'integer', description: 'Max characters of page content to return (default from the model profile; max 50000)' },
+max_chars: { type: 'integer', description: 'Max characters of page content to return (default from the model profile; a page is capped by the tool-result budget, so page with offset/next_offset for longer pages)' },
+                                offset: { type: 'integer', description: 'Start character offset into the extracted text (default 0). Use the next_offset from the previous reply to continue.' },
                             },
                             required: ['url']
                         }
@@ -10373,6 +10374,11 @@ max_chars: { type: 'integer', description: 'Max characters of page content to re
                             if (keep < obj.content.length) {
                                 const c = obj.content.charCodeAt(keep - 1);
                                 if (c >= 0xD800 && c <= 0xDBFF) keep -= 1;
+                            } else if (obj.content.length <= keep) {
+                                // The page fits; only the envelope is fat. Do not claim a loss that
+                                // did not happen (measured 2026-11-06: "clipped: 0 of 11800 withheld"
+                                // appended while every character was returned).
+                                return JSON.stringify(obj);
                             }
                             const hadMore = (obj.next_offset !== null && obj.next_offset !== undefined);
                             const full = obj.content.length;
@@ -11624,9 +11630,14 @@ max_chars: { type: 'integer', description: 'Max characters of page content to re
                             const contentType = a.content_type || (method === 'POST' ? 'application/json' : '');
                             try {
                                 // Use /api/fetch for POST, /api/extract for GET (extract is cleaner for readable content)
-                                const maxChars = Math.max(500, Math.min(parseInt(a.max_chars, 10) || this._toolLimit('fetchChars'), 50000));
+                                // A page larger than toolResultChars-200 is a page the model never sees
+                                // (measured 2026-11-06: asked 50 000, received 11 800, no next_offset).
+                                const wanted = parseInt(a.max_chars, 10) || this._toolLimit('fetchChars');
+                                const clipMax = this._toolLimit('toolResultChars');
+                                const limit = Math.max(500, Math.min(wanted, clipMax - 200)); // request window
+                                const offset = Math.max(0, parseInt(a.offset, 10) || 0);
                                 const endpoint = method === 'POST' ? '/api/fetch' : '/api/extract';
-                                const params = new URLSearchParams({ url, max_chars: String(maxChars) });
+                                const params = new URLSearchParams({ url, max_chars: String(Math.min(100000, offset + limit)) });
                                 if (method === 'POST') { params.set('method', 'POST'); params.set('body', body); if (contentType) params.set('content_type', contentType); }
                                 const resp = await fetch(endpoint + '?' + params.toString());
                                 if (resp.status === 403) return JSON.stringify({ error: 'URL blocked — internal network' });
@@ -11634,18 +11645,47 @@ max_chars: { type: 'integer', description: 'Max characters of page content to re
                                     const err = await resp.json().catch(() => ({}));
                                     return JSON.stringify({ error: 'Fetch failed: ' + (err.error || `HTTP ${resp.status}`), status: resp.status, details: err.details || '' });
                                 }
-                                // For POST/route, the response is raw text; for GET/extract it's JSON
+                                // POST: /api/fetch returns raw text, so page it by characters.
                                 if (method === 'POST') {
                                     const text = await resp.text();
-                                    return JSON.stringify({ method, content: text.substring(0, maxChars), content_chars: text.length,
-                                                            returned_chars: Math.min(text.length, maxChars), truncated: text.length > maxChars });
+                                    const start = Math.min(offset, text.length);
+                                    let lim = Math.max(500, Math.min(limit, clipMax - 200));
+                                    let env;
+                                    do {
+                                        const slice = text.slice(start, start + lim);
+                                        const nextOffset = start + slice.length < text.length ? start + slice.length : null;
+                                        env = { method, offset: start, content: slice, returned_chars: slice.length,
+                                                content_chars: text.length, total_chars: text.length, source_bytes: text.length,
+                                                truncated: nextOffset !== null, next_offset: nextOffset };
+                                        if (JSON.stringify(env).length <= clipMax || lim <= 500) break;
+                                        lim -= Math.max(1, JSON.stringify(env).length - clipMax);
+                                    } while (true);
+                                    return JSON.stringify(env);
                                 }
+                                // GET: /api/extract carries content_chars = the true length of the extracted
+                                // text, so offset/next_offset are exact rather than hopeful.
                                 const data = await resp.json();
-                                return JSON.stringify({ method, title: data.title || '', content: (data.content || '').substring(0, maxChars),
-                                                        content_chars: data.content_chars || (data.content || '').length,
-                                                        returned_chars: Math.min((data.content || '').length, maxChars),
-                                                        truncated: !!(data.truncated || (data.content_chars > maxChars)),
-                                                        word_count: data.word_count || 0, method_proxy: data.method || 'extract' });
+                                const full = data.content || '';
+                                // UTF-16 length when the proxy supplies it: Python len() counts code points,
+                                // JS counts UTF-16 units, and 7 astral chars were enough to leave a 7-char
+                                // gap at the end of a 90 KB page (measured 2026-11-06).
+                                const totalChars = Number(data.content_chars_utf16) || Number(data.content_chars) || full.length;
+                                let start = Math.min(offset, totalChars);
+                                if (start > 0) { const prev = full.charCodeAt(start - 1); if (prev >= 0xD800 && prev <= 0xDBFF) start += 1; }
+                                let lim = Math.max(500, Math.min(limit, clipMax - 200));
+                                let env;
+                                do {
+                                    const slice = full.slice(start, start + lim);
+                                    const nextOffset = start + slice.length < totalChars ? start + slice.length : null;
+                                    env = { method, title: data.title || '', offset: start, content: slice, returned_chars: slice.length,
+                                            content_chars: totalChars, total_chars: totalChars,
+                                            source_bytes: (data.source_bytes === undefined ? null : data.source_bytes),
+                                            truncated: nextOffset !== null, next_offset: nextOffset,
+                                            word_count: data.word_count || 0, method_proxy: data.method || 'extract' };
+                                    if (JSON.stringify(env).length <= clipMax || lim <= 500) break;
+                                    lim -= Math.max(1, JSON.stringify(env).length - clipMax);
+                                } while (true);
+                                return JSON.stringify(env);
                             } catch (e) { return JSON.stringify({ error: 'Fetch failed: ' + e.message }); }
                         }
                         case 'wpm_install': {
@@ -14062,7 +14102,7 @@ class WebFetcherModule {
     }
     getHelpInfo() {
         return {
-            'fetch': 'fetch <url> [--post=BODY] [--type=CT] [--raw] — Fetch URL (raw HTML/text); --post enables POST with body, --type sets Content-Type, --raw shows untruncated content',
+            'fetch': 'fetch <url> [--post=BODY] [--type=CT] [--raw] [--save=FILE] — Fetch URL (raw HTML/text); --post enables POST with body, --type sets Content-Type, --raw shows untruncated content, --save writes it to the VFS',
             'extract': 'extract <url> — Extract readable article content (title + body text) from a URL',
         };
     }
@@ -14126,6 +14166,21 @@ class WebFetcherModule {
                 return;
             }
             const text = await resp.text();
+            // --save: the only terminal path from a remote URL to the VFS. Without it a
+            // 100 KB source page can only be read through 3 000-char scrollback, which is
+            // what sent the in-OS agent looking for a shell redirect (reported 2026-11-06).
+            if (flags.save) {
+                const path = String(flags.save === true ? (url.split('/').pop().split('?')[0] || 'fetch.txt') : flags.save);
+                const dir = path.includes('/') ? path.slice(0, path.lastIndexOf('/')) : '';
+                if (dir) { try { this.terminal.fs.mkdir(dir); } catch (e) {} }
+                const wrote = this.terminal.fs.writeFile(path, text);
+                if (!wrote || this.terminal.fs.readFile(path) !== text) {
+                    this.terminal.print(`Save failed: could not write ${path}`, 'error');
+                    return;
+                }
+                this.terminal.print(`💾 Saved ${text.length} chars to ${path}`, 'success');
+                return;
+            }
             const limit = showRaw ? text.length : 3000;
             this.terminal.print(`\n=== Content from ${url} (${method}) ===\n`, 'success');
             this.terminal.print(text.substring(0, limit) + (text.length > limit && !showRaw ? '...' : ''));
diff --git a/modules/core/module-aiassist.js b/modules/core/module-aiassist.js
index 0a0ea71..a3ffb6f 100644
--- a/modules/core/module-aiassist.js
+++ b/modules/core/module-aiassist.js
@@ -226,7 +226,8 @@ buildSystemPrompt() {
                                 method: { type: 'string', enum: ['GET', 'POST'], description: 'HTTP method (default GET)' },
                                 body: { type: 'string', description: 'Request body for POST (JSON string, max 10KB)' },
                                 content_type: { type: 'string', description: 'Content-Type header (default application/json for POST)' },
-max_chars: { type: 'integer', description: 'Max characters of page content to return (default from the model profile; max 50000)' },
+max_chars: { type: 'integer', description: 'Max characters of page content to return (default from the model profile; a page is capped by the tool-result budget, so page with offset/next_offset for longer pages)' },
+                                offset: { type: 'integer', description: 'Start character offset into the extracted text (default 0). Use the next_offset from the previous reply to continue.' },
                             },
                             required: ['url']
                         }
@@ -1455,6 +1456,11 @@ max_chars: { type: 'integer', description: 'Max characters of page content to re
                             if (keep < obj.content.length) {
                                 const c = obj.content.charCodeAt(keep - 1);
                                 if (c >= 0xD800 && c <= 0xDBFF) keep -= 1;
+                            } else if (obj.content.length <= keep) {
+                                // The page fits; only the envelope is fat. Do not claim a loss that
+                                // did not happen (measured 2026-11-06: "clipped: 0 of 11800 withheld"
+                                // appended while every character was returned).
+                                return JSON.stringify(obj);
                             }
                             const hadMore = (obj.next_offset !== null && obj.next_offset !== undefined);
                             const full = obj.content.length;
@@ -2706,9 +2712,14 @@ max_chars: { type: 'integer', description: 'Max characters of page content to re
                             const contentType = a.content_type || (method === 'POST' ? 'application/json' : '');
                             try {
                                 // Use /api/fetch for POST, /api/extract for GET (extract is cleaner for readable content)
-                                const maxChars = Math.max(500, Math.min(parseInt(a.max_chars, 10) || this._toolLimit('fetchChars'), 50000));
+                                // A page larger than toolResultChars-200 is a page the model never sees
+                                // (measured 2026-11-06: asked 50 000, received 11 800, no next_offset).
+                                const wanted = parseInt(a.max_chars, 10) || this._toolLimit('fetchChars');
+                                const clipMax = this._toolLimit('toolResultChars');
+                                const limit = Math.max(500, Math.min(wanted, clipMax - 200)); // request window
+                                const offset = Math.max(0, parseInt(a.offset, 10) || 0);
                                 const endpoint = method === 'POST' ? '/api/fetch' : '/api/extract';
-                                const params = new URLSearchParams({ url, max_chars: String(maxChars) });
+                                const params = new URLSearchParams({ url, max_chars: String(Math.min(100000, offset + limit)) });
                                 if (method === 'POST') { params.set('method', 'POST'); params.set('body', body); if (contentType) params.set('content_type', contentType); }
                                 const resp = await fetch(endpoint + '?' + params.toString());
                                 if (resp.status === 403) return JSON.stringify({ error: 'URL blocked — internal network' });
@@ -2716,18 +2727,47 @@ max_chars: { type: 'integer', description: 'Max characters of page content to re
                                     const err = await resp.json().catch(() => ({}));
                                     return JSON.stringify({ error: 'Fetch failed: ' + (err.error || `HTTP ${resp.status}`), status: resp.status, details: err.details || '' });
                                 }
-                                // For POST/route, the response is raw text; for GET/extract it's JSON
+                                // POST: /api/fetch returns raw text, so page it by characters.
                                 if (method === 'POST') {
                                     const text = await resp.text();
-                                    return JSON.stringify({ method, content: text.substring(0, maxChars), content_chars: text.length,
-                                                            returned_chars: Math.min(text.length, maxChars), truncated: text.length > maxChars });
+                                    const start = Math.min(offset, text.length);
+                                    let lim = Math.max(500, Math.min(limit, clipMax - 200));
+                                    let env;
+                                    do {
+                                        const slice = text.slice(start, start + lim);
+                                        const nextOffset = start + slice.length < text.length ? start + slice.length : null;
+                                        env = { method, offset: start, content: slice, returned_chars: slice.length,
+                                                content_chars: text.length, total_chars: text.length, source_bytes: text.length,
+                                                truncated: nextOffset !== null, next_offset: nextOffset };
+                                        if (JSON.stringify(env).length <= clipMax || lim <= 500) break;
+                                        lim -= Math.max(1, JSON.stringify(env).length - clipMax);
+                                    } while (true);
+                                    return JSON.stringify(env);
                                 }
+                                // GET: /api/extract carries content_chars = the true length of the extracted
+                                // text, so offset/next_offset are exact rather than hopeful.
                                 const data = await resp.json();
-                                return JSON.stringify({ method, title: data.title || '', content: (data.content || '').substring(0, maxChars),
-                                                        content_chars: data.content_chars || (data.content || '').length,
-                                                        returned_chars: Math.min((data.content || '').length, maxChars),
-                                                        truncated: !!(data.truncated || (data.content_chars > maxChars)),
-                                                        word_count: data.word_count || 0, method_proxy: data.method || 'extract' });
+                                const full = data.content || '';
+                                // UTF-16 length when the proxy supplies it: Python len() counts code points,
+                                // JS counts UTF-16 units, and 7 astral chars were enough to leave a 7-char
+                                // gap at the end of a 90 KB page (measured 2026-11-06).
+                                const totalChars = Number(data.content_chars_utf16) || Number(data.content_chars) || full.length;
+                                let start = Math.min(offset, totalChars);
+                                if (start > 0) { const prev = full.charCodeAt(start - 1); if (prev >= 0xD800 && prev <= 0xDBFF) start += 1; }
+                                let lim = Math.max(500, Math.min(limit, clipMax - 200));
+                                let env;
+                                do {
+                                    const slice = full.slice(start, start + lim);
+                                    const nextOffset = start + slice.length < totalChars ? start + slice.length : null;
+                                    env = { method, title: data.title || '', offset: start, content: slice, returned_chars: slice.length,
+                                            content_chars: totalChars, total_chars: totalChars,
+                                            source_bytes: (data.source_bytes === undefined ? null : data.source_bytes),
+                                            truncated: nextOffset !== null, next_offset: nextOffset,
+                                            word_count: data.word_count || 0, method_proxy: data.method || 'extract' };
+                                    if (JSON.stringify(env).length <= clipMax || lim <= 500) break;
+                                    lim -= Math.max(1, JSON.stringify(env).length - clipMax);
+                                } while (true);
+                                return JSON.stringify(env);
                             } catch (e) { return JSON.stringify({ error: 'Fetch failed: ' + e.message }); }
                         }
                         case 'wpm_install': {
diff --git a/modules/core/module-fetcher.js b/modules/core/module-fetcher.js
index 45505a7..d1b7bcc 100644
--- a/modules/core/module-fetcher.js
+++ b/modules/core/module-fetcher.js
@@ -5,7 +5,7 @@ class WebFetcherModule {
     }
     getHelpInfo() {
         return {
-            'fetch': 'fetch <url> [--post=BODY] [--type=CT] [--raw] — Fetch URL (raw HTML/text); --post enables POST with body, --type sets Content-Type, --raw shows untruncated content',
+            'fetch': 'fetch <url> [--post=BODY] [--type=CT] [--raw] [--save=FILE] — Fetch URL (raw HTML/text); --post enables POST with body, --type sets Content-Type, --raw shows untruncated content, --save writes it to the VFS',
             'extract': 'extract <url> — Extract readable article content (title + body text) from a URL',
         };
     }
@@ -69,6 +69,21 @@ class WebFetcherModule {
                 return;
             }
             const text = await resp.text();
+            // --save: the only terminal path from a remote URL to the VFS. Without it a
+            // 100 KB source page can only be read through 3 000-char scrollback, which is
+            // what sent the in-OS agent looking for a shell redirect (reported 2026-11-06).
+            if (flags.save) {
+                const path = String(flags.save === true ? (url.split('/').pop().split('?')[0] || 'fetch.txt') : flags.save);
+                const dir = path.includes('/') ? path.slice(0, path.lastIndexOf('/')) : '';
+                if (dir) { try { this.terminal.fs.mkdir(dir); } catch (e) {} }
+                const wrote = this.terminal.fs.writeFile(path, text);
+                if (!wrote || this.terminal.fs.readFile(path) !== text) {
+                    this.terminal.print(`Save failed: could not write ${path}`, 'error');
+                    return;
+                }
+                this.terminal.print(`💾 Saved ${text.length} chars to ${path}`, 'success');
+                return;
+            }
             const limit = showRaw ? text.length : 3000;
             this.terminal.print(`\n=== Content from ${url} (${method}) ===\n`, 'success');
             this.terminal.print(text.substring(0, limit) + (text.length > limit && !showRaw ? '...' : ''));
diff --git a/modules/core/module-loader.js b/modules/core/module-loader.js
index 1005463..1f931fd 100644
--- a/modules/core/module-loader.js
+++ b/modules/core/module-loader.js
@@ -4,7 +4,7 @@
     // Core module bundle loaded synchronously in main.html.
     // This loader only handles version cache-busting, splash, terminal init, and optional ext modules.
 
-    const LATEST_VER = 'v4.6.150';
+    const LATEST_VER = 'v4.6.151';
     const CACHE = '?v=' + LATEST_VER;
     // Exposed so ext modules can register their own URL with the same cache-busting version
     // instead of an unversioned path the browser may already have cached (shell.js did).
diff --git a/modules/ext/cryptogzip.js b/modules/ext/cryptogzip.js
index 200abdd..cc275df 100644
--- a/modules/ext/cryptogzip.js
+++ b/modules/ext/cryptogzip.js
@@ -15,7 +15,8 @@ class CryptoGzipModule {
             'decrypt': 'decrypt <path.enc> <passphrase> — Decrypt a .enc file',
             'tar': 'tar <src-dir> <out.tar[.gz]> — Bundle a VFS directory into a tar archive (gzip if .gz)',
             'untar': 'untar <path.tar[.gz]> [dest-dir] — Extract a tar archive into VFS (auto-detects gzip)',
-            'wget': 'wget <url> [filename] — Download a URL and save to VFS'
+            'wget': 'wget <url> [filename] — Download a URL (via /api/fetch) and save it to VFS',
+            'curl': 'curl [-s] [-o FILE] <url> — Same as wget: proxy fetch + verified VFS write'
         };
     }
 
@@ -342,7 +343,10 @@ class CryptoGzipModule {
     }
 
     // ============================================================
-    // WGET — fetch URL and save to VFS (binary-safe)
+    // WGET — fetch a URL through the /api/fetch proxy and save to VFS
+    // A direct browser fetch() only works same-origin: cross-origin URLs
+    // throw "Failed to fetch" (CORS), measured 2026-11-06 on the served
+    // v4.6.150 page. /api/fetch returns the raw source as UTF-8 text.
     // ============================================================
 
     async _cmdWget(args) {
@@ -350,20 +354,40 @@ class CryptoGzipModule {
             this.terminal.print('Usage: wget <url> [filename] — Download a URL and save to VFS', 'warning');
             return;
         }
-        const url = args[0];
-        const filename = args[1] || url.split('/').pop() || 'download.bin';
+        const url = /^https?:\/\//i.test(args[0]) ? args[0] : 'https://' + args[0];
+        const filename = args[1] || url.split('/').pop().split('?')[0] || 'download.bin';
         this.terminal.print(`Downloading ${url}...`, 'info');
+        let text;
         try {
-            const resp = await fetch(url);
-            if (!resp.ok) throw new Error(`HTTP ${resp.status}: ${resp.statusText}`);
-            const buf = await resp.arrayBuffer();
-            const bytes = new Uint8Array(buf);
-            this._vfsWriteBytes(filename, bytes);
-            const sizeKb = (bytes.length / 1024).toFixed(1);
-            this.terminal.print(`✅ wget: ${filename} (${sizeKb} KB, ${bytes.length} bytes)`, 'success');
+            const resp = await fetch('/api/fetch?url=' + encodeURIComponent(url));
+            if (resp.status === 403) {
+                this.terminal.print('wget error: URL blocked — internal network', 'error');
+                return;
+            }
+            if (!resp.ok) {
+                let detail = 'HTTP ' + resp.status;
+                try { const j = await resp.json(); detail = j.error || detail; } catch (e) {}
+                this.terminal.print('wget error: ' + detail, 'error');
+                return;
+            }
+            text = await resp.text();
         } catch (e) {
-            this.terminal.print(`wget error: ${e.message}`, 'error');
+            this.terminal.print('wget error: ' + e.message, 'error');
+            return;
+        }
+        // writeFile() returns false rather than throwing when the parent directory is
+        // missing — the old code printed ✅ on that path (measured: writeFile('nosuchdir/x.txt') === false).
+        const dir = filename.includes('/') ? filename.slice(0, filename.lastIndexOf('/')) : '';
+        if (dir) { try { this.terminal.fs.mkdir(dir); } catch (e) {} }
+        if (!this.terminal.fs.writeFile(filename, text)) {
+            this.terminal.print(`wget error: could not write ${filename} (missing directory, or path is a directory)`, 'error');
+            return;
         }
+        if (this.terminal.fs.readFile(filename) !== text) {
+            this.terminal.print(`wget error: write verification failed for ${filename}`, 'error');
+            return;
+        }
+        this.terminal.print(`✅ wget: ${filename} (${(text.length / 1024).toFixed(1)} KB, ${text.length} chars)`, 'success');
     }
 
     // ============================================================
@@ -582,6 +606,22 @@ class CryptoGzipModule {
         this.commands['tar'] = async (args) => self._cmdTar(args);
         this.commands['untar'] = async (args) => self._cmdUntar(args);
         this.commands['wget'] = async (args) => self._cmdWget(args);
+        // curl — the flags an agent actually types. No shell semantics: -s/-L/-f are
+        // accepted and ignored, -o/--output selects the VFS target. Delegates to the
+        // single verified writer above so the two cannot drift.
+        this.commands['curl'] = async (args) => {
+            const positional = [];
+            let out = null;
+            for (let i = 0; i < args.length; i++) {
+                const a = String(args[i]);
+                if (a === '-o' || a === '-O' || a === '--output') { out = args[++i]; }
+                else if (a.startsWith('-')) { /* accepted, ignored */ }
+                else positional.push(a);
+            }
+            if (!positional[0]) { this.terminal.print('Usage: curl [-s] [-o FILE] <url>', 'warning'); return; }
+            const target = out || (positional[0].split('/').pop().split('?')[0] || 'download.bin');
+            return self._cmdWget([positional[0], target]);
+        };
         this.commandsMeta = {
             gzip: { argType: 'file', description: 'Compress a VFS file to .gz' },
             gunzip: { argType: 'file', description: 'Decompress a .gz file (binary-safe)' },
@@ -589,7 +629,8 @@ class CryptoGzipModule {
             decrypt: { argType: 'file', description: 'Decrypt a .enc file' },
             tar: { argType: 'file', description: 'Bundle a VFS directory into a tar archive' },
             untar: { argType: 'file', description: 'Extract a tar archive into VFS' },
-            wget: { argType: 'url', description: 'Download a URL and save to VFS' }
+            wget: { argType: 'url', description: 'Download a URL and save to VFS' },
+            curl: { argType: 'url', description: 'curl [-s] [-o FILE] <url> — same as wget' }
         };
     }
 }